Adaptive pre-distortion with interference detection and mitigation
    33.
    发明授权
    Adaptive pre-distortion with interference detection and mitigation 有权
    具有干扰检测和缓解的自适应预失真

    公开(公告)号:US07929927B2

    公开(公告)日:2011-04-19

    申请号:US11927241

    申请日:2007-10-29

    IPC分类号: H04B1/04 H03C1/62

    摘要: Embodiments include methods, apparatus, and electronic systems adapted to perform adaptive pre-distortion. Embodiments include combining an input sample with a gain value to generate a pre-distorted data sample, where the gain value is a function of at least one gain entry stored within a gain lookup table. An amplified analog signal is generated from the pre-distorted data sample, and a feedback sample is also generated, which corresponds to an antenna output signal. The antenna output signal includes the amplified analog signal. A difference indicator is generated to reflect a difference between the input sample and the feedback sample, and at least one updated gain value is generated based on a comparison between the difference indicator and at least one previous difference indicator. At least one gain entry within the gain lookup table is updated with the at least one updated gain value.

    摘要翻译: 实施例包括适于执行自适应预失真的方法,装置和电子系统。 实施例包括将输入样本与增益值组合以生成预失真数据样本,其中增益值是存储在增益查找表内的至少一个增益条目的函数。 从预失真的数据样本产生放大的模拟信号,并且还产生对应于天线输出信号的反馈样本。 天线输出信号包括放大的模拟信号。 生成差异指示符以反映输入样本和反馈样本之间的差异,并且基于差异指示符与至少一个先前差异指标之间的比较来生成至少一个更新的增益值。 增益查找表内的至少一个增益条目用至少一个更新的增益值更新。

    LOAD INSENSITIVE BALANCED POWER AMPLIFIER AND RELATED OPERATING METHOD
    34.
    发明申请
    LOAD INSENSITIVE BALANCED POWER AMPLIFIER AND RELATED OPERATING METHOD 有权
    负载平衡功率放大器及相关操作方法

    公开(公告)号:US20090179704A1

    公开(公告)日:2009-07-16

    申请号:US12013149

    申请日:2008-01-11

    IPC分类号: H03F3/68

    摘要: A balanced power amplifier that is insensitive to load line variations is provided. The balanced power amplifier is suitable for use in wireless transmitter applications, such as cellular telephones, mobile computing devices, and portable communication devices. An embodiment of such a balanced power amplifier includes an input coupler, first and second amplifier devices, and a level adjustment component. The input coupler generates a first signal component and a second signal component from an input signal, where the first signal component and the second signal component are out of phase relative to one another. The first amplifier device generates a first output signal that is influenced by the first signal component, and the second amplifier device generates a second output signal that is influenced by the second signal component. The level adjustment component is coupled between the input coupler device and the input of the first amplifier device. The level adjustment component performs signal level tuning on its input signal. The signal level tuning is adaptively performed in response to the impedance characteristics of the load being driven by the balanced power amplifier.

    摘要翻译: 提供对负载线变化不敏感的平衡功率放大器。 平衡功率放大器适用于无线发射机应用,例如蜂窝电话,移动计算设备和便携式通信设备。 这种平衡功率放大器的实施例包括输入耦合器,第一和第二放大器装置以及电平调整部件。 输入耦合器从输入信号产生第一信号分量和第二信号分量,其中第一信号分量和第二信号分量相对于彼此异相。 第一放大器装置产生受第一信号分量影响的第一输出信号,第二放大器装置产生受第二信号分量影响的第二输出信号。 电平调节组件耦合在输入耦合器装置和第一放大器装置的输入端之间。 电平调整组件对其输入信号进行信号电平调谐。 响应于由平衡功率放大器驱动的负载的阻抗特性,自适应地执行信号电平调谐。

    ADAPTIVE PRE-DISTORTION WITH INTERFERENCE DETECTION AND MITIGATION
    35.
    发明申请
    ADAPTIVE PRE-DISTORTION WITH INTERFERENCE DETECTION AND MITIGATION 有权
    具有干扰检测和缓解的自适应预失真

    公开(公告)号:US20090111399A1

    公开(公告)日:2009-04-30

    申请号:US11927241

    申请日:2007-10-29

    IPC分类号: H04B1/00

    摘要: Embodiments include methods, apparatus, and electronic systems adapted to perform adaptive pre-distortion. Embodiments include combining an input sample with a gain value to generate a pre-distorted data sample, where the gain value is a function of at least one gain entry stored within a gain lookup table. An amplified analog signal is generated from the pre-distorted data sample, and a feedback sample is also generated, which corresponds to an antenna output signal. The antenna output signal includes the amplified analog signal. A difference indicator is generated to reflect a difference between the input sample and the feedback sample, and at least one updated gain value is generated based on a comparison between the difference indicator and at least one previous difference indicator. At least one gain entry within the gain lookup table is updated with the at least one updated gain value.

    摘要翻译: 实施例包括适于执行自适应预失真的方法,装置和电子系统。 实施例包括将输入样本与增益值组合以生成预失真数据样本,其中增益值是存储在增益查找表内的至少一个增益条目的函数。 从预失真的数据样本产生放大的模拟信号,并且还产生对应于天线输出信号的反馈样本。 天线输出信号包括放大的模拟信号。 生成差异指示符以反映输入样本和反馈样本之间的差异,并且基于差异指示符与至少一个先前差异指标之间的比较来生成至少一个更新的增益值。 增益查找表内的至少一个增益条目用至少一个更新的增益值更新。

    Power amplifier with VSWR detection and correction feature
    36.
    发明授权
    Power amplifier with VSWR detection and correction feature 有权
    具有VSWR检测和校正功能的功率放大器

    公开(公告)号:US07440731B2

    公开(公告)日:2008-10-21

    申请号:US11191687

    申请日:2005-07-27

    IPC分类号: H01Q11/12 H04B1/04

    摘要: A radio frequency (“RF”) power amplifier circuit as described herein is configured to detect and measure an output load mismatch and to adjust the operating characteristics of the RF power amplifier to reduce output signal distortion. The circuit includes a directional RF signal coupler that obtains a coupled reflected RF signal that is indicative of the output load mismatch. The coupled reflected RF signal is processed to generate one or more bias control signals for the RF power amplifier. In operation, a mismatch condition will result in a measurable coupled reflected RF signal and a corresponding reduction in output power from the RF power amplifier. Ultimately, the output power control mechanism strives to maintain the RF power amplifier within a linear operating range.

    摘要翻译: 如本文所述的射频(“RF”)功率放大器电路被配置为检测和测量输出负载失配并且调整RF功率放大器的工作特性以减小输出信号失真。 该电路包括定向RF信号耦合器,其获得指示输出负载不匹配的耦合的反射RF信号。 处理耦合的反射RF信号以产生用于RF功率放大器的一个或多个偏置控制信号。 在操作中,不匹配条件将导致可测量的耦合反射RF信号和来自RF功率放大器的输出功率的相应降低。 最终,输出功率控制机制致力于将RF功率放大器维持在线性工作范围内。

    Integrated circuit having passive circuit elements
    38.
    发明授权
    Integrated circuit having passive circuit elements 失效
    具有无源电路元件的集成电路

    公开(公告)号:US5416356A

    公开(公告)日:1995-05-16

    申请号:US115833

    申请日:1993-09-03

    CPC分类号: H01L27/08

    摘要: An integrated circuit is formed from a first layer of conductive material (30) which is separated from a second layer of conductive material (39) by a layer of dielectric material (36). The first layer of conductive material (30) is patterned to form a first plate (32, 59) of a capacitor (22, 50, 62, 72). An electrical interconnect (33, 63) is formed within the first plate (32, 59), respectively. A via (37) is formed in the layer of dielectric material (36). A second layer of conductive material (39) is patterned to form a second plate (42, 56, 66, 76) of the capacitor (22, 50, 62, 72) and a planar spiral inductor (21, 51, 61, 71). The planar spiral inductor (21, 51, 61, 71) is surrounded by the second plate (42, 56, 66, 76) of the capacitor (22, 50, 62, 72).

    摘要翻译: 由第一导电材料层(30)形成集成电路,第一层由电介质材料层(36)与第二导电材料层(39)分开。 第一层导电材料(30)被图案化以形成电容器(22,50,62,72)的第一板(32,59)。 电互连(33,63)分别形成在第一板(32,59)内。 在电介质材料层(36)中形成通孔(37)。 将第二层导电材料(39)图案化以形成电容器(22,50,62,72)的第二板(42,56,66,76)和平面螺旋电感器(21,51,61,71) )。 平面螺旋电感器(21,51,61,71)由电容器(22,50,62,72)的第二板(42,56,66,76)包围。

    Broadband 180 degree hybrid
    39.
    发明授权
    Broadband 180 degree hybrid 失效
    宽带180度混合

    公开(公告)号:US5023576A

    公开(公告)日:1991-06-11

    申请号:US445307

    申请日:1989-12-04

    IPC分类号: H03H7/21 H03H7/48

    CPC分类号: H03H7/48 H03H7/21

    摘要: A broadband 180 degree hybrid having lumped or semi-lumped elements is comprised of a network of low and high pass filters. A 180 degree phase differential is obtained by splitting an input signal from a first input. A first portion of the split signal is passed through a low pass filter and a second portion is passed through a high pass filter. The phase differential is maintained at 180 degrees. A zero (0) degree phase differential is obtained by splitting an input signal from a second input and passing both portions through a pair of low pass filters or through a pair of high pass filters.

    摘要翻译: 具有集总或半集总元件的宽带180度混合器由低通滤波器和高通滤波器的网络组成。 通过分割来自第一输入的输入信号获得180度相位差。 分离信号的第一部分通过低通滤波器,第二部分通过高通滤波器。 相位差保持在180度。 通过分割来自第二输入的输入信号并通过两个部分通过一对低通滤波器或通过一对高通滤波器来获得零(0)度相位差。